A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5960-01-388-1988
NSN 6685-01-379-7764
NSN 6240-00-571-8449
NSN 6620-00-058-5225
NSN 5985-01-288-5646
NSN 6620-01-298-6853
NSN 6145-00-188-3657
NSN 5835-01-602-0311
NSN 6620-01-422-2775
NSN 5960-01-100-4454
NSN 5910-00-506-8013
NSN 5930-01-192-2364